Naichau; Aruiteru

[Kurious]

Hello,

Morning Musume has two songs "Naichau Kamo" and "Aruiteru", that have conjugations that I don't understand. I don't understand the conjugation 泣いちゃう. As for 歩いてる, I understand that "aruite" = "walking" and that "aruite iru" = "to be walking", but I don't understand "aruiteru". Also, should the romanization "aruite iru" be written with two words or just one?

お願いします

[Kakads]

1. http://www.guidetojapanese.org/unintended.html
2. 歩いてる is a contraction of 歩いている. It's common to take out the い.
And it's entirely up to you whether you want to put it as one word or two in romaji, because it's all written without spaces in Japanese anyway.

[Kurious]

OK, after reading that page I finally found more information about the chau "conjugation" under the "shimau" entry on my grammar dictionary. Thanks!

[ニッキー]

While you're free to romanise how you like, my preference is to write aruiteru as one word because it's a contraction.